Car-roof.



vN0. 870,721. PATENTED NOV. 12, 1907.

W. N. GARRETT.

OAR ROOF.

APPLICATION FILED BBPT.21.1906.

2 SHEETS-SHEET 1.

J Nb.870,721.

PATENTED NOV. 12. 1907.

N. GARRETT.

7 CAR ROOF.

' J Jes. -W

UNITED STATES PATENT OFFICE.

WVILLIAM N. GARRETT, OF AMHERST, NOVA SCOTIA, CANADA, ASSIGNOR OFONE-HALF TO HAROLD H. ROBERTSON, OF CANTON, MASSACHUSETTS.

CAR-ROOF.

Specification of Letters Patent.

Patented NOV. 12, 1907.

Application filed September 21. 1906. Serial No. 335,670.

To all whom it may concern:

. Be it known that 1, WILLIAM N. GARRETT, a citizen of the UnitedStates, and now residing in Amherst, Nova Scotia, Canada, have inventedan Improvement in Car-Roofs, of which the following description, inconnection with the accompanying drawings, is a specification, likeletters on the drawings representing like parts.

This invention relates to a roof construction especially designed andadapted for use on railway cars, and has for its object to provide asimple and efficient car roof, which is strong, durable, substantiallyfire and water and acid proof, inexpensive and easy of application. Forthispurpose I employ as the essential feature of the roof constructionsheets of'steel or other metal, preferably covered on their oppositesides with layers of asbestos or mineral wool which are cemented to theopposite sides of the metal sheets, and provide means for forming awater-tight joint between adjacent composite sheets and for firmlysecuring said composite sheets in place, as will be described.

Figure 1 is a side elevation with parts broken away of a railway carprovided with a roof embodying this invention. Fig. 2, an end elevation,with parts omitted, of the car shown in Fig. 1. Fig. 3, a detail in planof a portion of the roof shown in Fig, 1. Figs. 4, 5, 6 and 7, sectionaldetails on an enlarged scale to be referred to, and Fig. 8, a detail ofthe composite sheet employed by me.

Referring to the drawings and especially Fig. 7, a represents the sideor eave plates which are connected by the carlines b, having their upperedge inclined downward from the center and mortised to receive the ridgepole c and purlins (I, the upper surface of the latter being flush withthe upper surface of the cal-lines b.

The ridge pole c is grooved longitudinally on its opposite sides toreceive the inner ends or edges of the composite sheets, which comprisesheets e of steel or other metal having layers f of asbestos or mineralwool cemented to the opposite sides or surfaces of said metal sheets asrepresented in Fig. 8.

The composite sheets constitute an essential part of the car roof andrender the same substantially fire-proof. Provision is made for securingadjacent composite sheets in such manner as to form a water-tight andfireproof joint and for this purpose, the sides of adjacent sheets areprovided with upturned flanges g (see Fig. 4), which abut and areprotected by a covering strip or cap h of metal and preferably of thesame materials as the composite sheets, which caps are provided with arecess 1' for the reception of the upturned side flanges of the adjacentcomposite sheets and have side flanges j which rest upon adjacentcomposite sheets.

The covering strips or caps h as well as the composite roofing sheetsare secured in place by auxiliary or intermcdiate carlines or battens Itprovided with longitudinal recesses or grooves m for the reception ofthe bent or recessed portion of the caps h as clearly shown in Fig. l.The battens k may and preferably will have their inner ends providedwith tcnons n which extend into mortises 0 in the ridge pole c, asclearly shown in Fig. 6. The intermediate carlines or battens k aresocured at their outer ends by the screws 7) to the side plates a (see-Fig. 5). I

The composite roofing sheets may have their outer ends or edges firmlysecm'ed by metal clamping pieces 10, (see Figs. 5 and 7), which areinterposed between the frieze 12 and facia 13 to form a space for thecirculation of air and water and to allow oscillation of the sheets, thesaid metal clamps being firmly secured to the side or even plates by thebolts 14, which extend through the frieze l2, facia 13, side boards 16and cave plates a as clearly shown in Fig. 5. The metal clamps may beadditionally secured to the facia 13 by screws 17.

The composite sheets may be covered by the usual wood roof 20, which isnailed to the ridge pole c, frieze 12 and intermediate purlins 2l. whichlatter rest upon the battens or intermediate carlines is. "he oudmostcomposite sheets may be provided with a down-turned flange 23 as shownat the left in Fig. 2.

From the above description it will be seen that the car roof is renderedsubstantially fire and water proof, is simple and ellicient and can bemade at a minimum cost. If desired the central joint 24 formed by thetwo halves of the roof 20 may be covered by a strip 25 of the compositeroofing sheet, secured to the roof by nails 26.

Claims.

1. 1n a car root, in combination, a ridge pole provided in its sideswith longitudinally cxtcndcd grooves and with mortiscs, rooting sheetsof the character described having their inner ends extended intosaid'grooves and provided with rip-turned side [lung-cs. metal caps orcovering strips provided with recesses into which the upturned flangesof adjacent roofing sheets extend, battens 0t fibrous material recessedon their under side to lit snugly over said caps and force the sides ofsaid caps into contact with the upturned flanges on said sheets, andprovided at their inner ends with tenons to extend into the mortiscs inthe said ridge pole, and means to secure said battens in fixed position,substantially as described.

2. In a car roof, in combination, a plurality of roofing sheets havingupturned side flanges, metallic caps fitted over the upturned flanges ofadjacent roofing sheets and provided with side flanges resting on saidsheets, battens of fibrous material grooved or recessed on their underside to fit snugly over the said caps to force the upturned flanges intocontact, and means to secure said battens in fixed positions and forcethe side flanges on the cap into 10 contact with adjacent roofingsheets, substantially as described.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribing Witnessesf WILLIAM N. GARRETT.

Witnesses FRANK FAUs'r, H. O. PHILLIPS.

